Coin-controlled lock



vv. R. NECKERMAN,

com coNmoLLEn Loc-K.

APPLICATION FILED AUG. I9, |9I9. lglflg Mmmm 259 IIIZIL ZSHEETSHSHEET I.

@I 96M@ I W. R. NECKERMAN.

com GONTROLLED-L0CK. A

APPLICATRON FILED AUG.19,19I9.

FISE.

FIEE.

9 mvinojr 2,425; E

WITNESSES PATENT OFFICE. 4

WILSON R. NEGKERMAN, 0F PITTSBURGH, PENNSYLVANIA.

COIN-CONTROLLED LOCK.

reen/ies.

To all whom t may concern.'

Be it known that I, WILSON R. NECKER- MAN, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Coin-Controlled Locks, o f which improvements the following is a specification.

rl`he object of my invention is to provide an improved coin controlled lock of the general type used to lock the doors of public toilet rooms and the like, to which access may be had from the outside only by depositing a coin in the lock.

In the accompanying sheets of drawings which form part of my specification I have illustrated the preferred embodiment of the invention. Figure 1 is a face view of the lock, a portion of the cover being broken away to show the locking mechanism; Fig. 2 a face view of the locking -mechanism lin a position different from that indicated in Fig. 1; Fig. 3 a sectional view taken on the line IIL-III, Fig. 1; Fig. 4 a sectional View taken on the line lV-IV, Fig. 2; Fig. 5 a sectional view taken on the line V--V, Fig. 1; Fig.v 6 a plan view of the lock casing; and Fig. 7 a plan view of the locking mechanism with the casingcover and legend plate removed.

lln the lock which l provide, mechanism is contained within a casing consisting of a mounting plate 1, adapted to be attached to a door 2, and a cover 3 attached to the lmounting plate. The locking mechanism includes a locking lbolt 4 mounted for transverse sliding movements between a pair of guides 5, which guides project laterally from, and may be formed Y integrally with, the mounting plate 1. As seen particularly in Fig. 4, ythe rear en d of the locking bolt is provided with a pair of elongate recesses 6 and 7, within which there are arranged portions of lock-withdrawing members 8 and 9 for moving lthe locking bolt. Through coin controlled mechanism presently to be described, the lock-withdrawing member 8 may be moved by a knob shaft 10, and independently of the coin controlled mechanism, the member 9 may be moved to withdraw the locking bolt by the rotation of a second knob shaft 11 rotatable independently of the knob shaft 10,

the locking I Specification of Letters Patent. Patented May 25, 1920, n

Application 'ied August 19, 1919. Serial No. 318,597.

Having reference first to the means which 1 provide for withdrawing the locking bolt through Vthe coin controlled mechanism, there is securely attached to the knob shaft 10aa finger 12 provided with a pin 13 extending through a slot 14 formed on 'the lower edge of the lock-withdrawing member 8, the finger 12 being held ieldingly in the position indicated in ig. 1 by lmeans of a spring 15, one end of which spring is secured to a lug 16 projecting laterally from the mounting plate 1. The movement of the lock-Withdrawin ber 8 to withdraw the locking bolt is, until a coin of the proper size has been deposited in the lock, preventedvA by a spring-pressed pivoted lever orv pawl417, the free end of which normally lies in a recess 18 formed in the top of such member. To release the lever 17, a coin 28, placed in a casing slot 19., is guided by a guide 20 lto its point of lodgment between pins 21 projecting laterally from the face of' the member 8. The face of this member may be provided with additional pins 22 for thus guiding the coin and forholding it in lodged position.

Referringto Fig. 4, there is indicated in dotted lines the position in the recess 6 of a finger 24'. projecting inwardly from the member 8 when such member is inthe position which fit normally occupies when at rest. By `the initial rotation,y of the knob shaft 10, the member 8 presses the coin 23 against the lower edge of the lever 17 and raises such lever from the recess 18 in the member 8, so that the further rotamemss l

tion of this knob shaft will not be resisted by thelocking lever. When the lever has thus been released, the member 8 will have been "moved to the position indicated in Figs, 2 and 4, in which the finger 8 engages the left end of the locking bolt. It will readily be seen that the further rotation of the knob shaft 10 will completely withdraw the locking bolt.

Means are' provided for dislodging the j coin upon the movement of the memberS subsequent to the release of the locking lever 17 by the coin.` For this purpose there is preferably provided a pin 25 having a beveled end lying in the path of the coin as it is moved by the member 8, as seen particularly in Fig. 4. A/ cover 25a,

which is secured to the guides 5, and which A'vacant or is in use,

-of the shaft 11, and the cooperates with the pins 21 and 22l to retain the coin in lodged pos1t1on,'1s bent outwardly at its left end to permit of the dislodgment of the coin. The coin may knob on the shaft 10 is released, the locking bolt will be thrown to its outward position by the action of a spring 15a, which 1s anchored to the bolt and tends to hold the bolt in locking position. A supplementalY leaf spring `26 may be provided for yieldingly holding the bolt 4 in locking posi-l tion, and yparticularly for holding it in its fully extended position during the initial movement of the bolt-withdrawing member 8. Y

As previously stated, the bolt 4 may be withdrawn through the rotation of the knob shaft 11, by a person in the toilet room. For this purpose the bolt-withdrawing member 9 may. consist of a finger, keyed directly to the knob shaftll, and projecting into and through the bolt recess' 7. That the bolt may thus be vfreely withdrawn, is readily seen from the fact that the movement of the bolt by the rotation of the shaft 10 is resisted by the locking lever which engages the member 8, rather than the bolt 4, ,and also by the fact that the bolt 4is provided with an elongate recess 6, in which the finger 24 of the member 8 lies so that the bolt may be moved by the member 9 without moving are placed in alinement with each other, the knob shaft 10 being tubular, and the end ofthe knob 11 being gaging detent 27. shaft 1l projects within the-tubulari knob shaft 10, so that a wrench-socket key 28 may be inserted through the tubular center portion of the knob 29 and into engagement with the detent 27. vBy turning the key 28 the shaftI 11 may be rotated independently of the shaft 10, and througlr the rotation consequent swinging of the lock-withdrawing finger 9, the locking bolt 4 may be withdrawn.

For indicating whether a toiletrroom is the top of the Vcasing cover3 isprovided with an opening 30 adjacent tothe coin receiving slot 19, and adjacent to such opening there is mounted for lateral sliding movement upona rod 32 a legend plate 34. As seen in Fig. 6, the upper face of` this late may be rovided with provided with a Vkey-entwo le ends acant and n use. For

`For moving the legend Preferably thev knob indicating that the toilet room is in'use. v

plate to its opposite position, the upper end of the finger 9 engages a downwardly extending flange 3G vformed at the end of the'legendplat'e, so that the movement of such finger ycauses the ,plate to move.

The legend plate may also be provided with a portion 37 adapted to close the coin slot 19 when the plate is in 85 the position indicating that the toilet room is in use. Y

A suitable register 38 is provided for registering the number of times the lock has been operated by the rotation of the knob shaft 10 operating through the coin controlled mechanism. For advancing the register, the knob shaft'lO has secured to it a finger 39 adapted to engage the operating lever 40 of the register. It will thus be seen that the knob shaft 11 may be operated or turned without advancing the register, and this for the reason that the knobshaft 1l always turns independently of the knob shaft 10. j

The coins used for operating the lock fall to the bottom of the casing 1, 3. To remove them from the casing, and also to read the register 38, the cover 3 of the casing is provided with an opening Vadapted to be closed by a plate 41, the upper edge of which is provided with a tongue 42 and the lower edge with a suitable key operated lock 43, adapted to attach the plate to the cover.

In operation a coin is first. inserted through the slot 19, and, falling downwardly through the guide 20, is lodged between the pins 21 ofthe lock-withdrawing member 8 and the forward end of the locking lever 17. The initial turning of the knob shaft 10 Ymoves the member 8 and the coin lodged thereon, so that the coin raises the lever from locking position. The further movement `of the locking member 8 being thenunresisted, the tongue 24 thereofengages the locking bolt and withdraws such bolt. During this final movement of the locking member 8 the coin against the beveled Leah-isa statutes, I have described the principle and operation of my invention together with the construction which I now consider to represent the best embodiment thereof. However, I desire to have it understood that, within the scope of the appended claims, my invention may be practised by other forms of construction than that specifically shown and described herein.

I claim as my invention:

l. A coin controlled lock including in combination, a locking bolt, a rotatable knob shaft, a bolt-withdrawing member movable by said shaft and adapted to engage said bolt after an initial movement of the shaft, a locking pawl adapted to engage saidmember, and means for guiding and lodging a coin between said member and pawl whereby the initial turning of said shaft will swing said pawl so as to permit the further turn-- ing ofthe shaft to move said member to Withdraw the locking bolt.

2. A coin controlled lock including in combination, a locking bolt, a rotatable knob shaft, a bolt withdrawing member movable by said'shaft and adapted to engage said bolt after an initial movement of the shaft, a 'locking pawl adapted to engage said member, means for guiding and lodging a coin between said member and pawl whereby the initial turning of said shaft will swing said pawl so as to permit the further turning of the shaft to move said member to withdraw the locking bolt, and means for dislodging the coin during the loch-withdrawing movement of said shaft.

3. A coin controlled lock including in combination, a locking bolt, a rotatable knob shaft, a bolt-withdrawing member movable by said shaft and adapted to engage said bolt after an initial movement of the shaft,

a locking pawl adapted to engage said member, and means for guiding and lodging a coin between said member and pawl whereby the initial turning of said shaft will swing said pawl so as to permit the further turning of the shaft to move said member to Withdraw the locking bolt, a register, and means operable solely by the rotation of said shaft for advancing said'register.

4. A coin-controiled lock including in combination a locking bolt, a rotatable knob shaft, a slide movable in response to shaft turning and after a preliminary traverse engaging and carrying with it in its further traverse said locking bolt, a locking pawl normally limiting the movement of said slide to its preliminary traverse, said slide being adapted to receive a coin and when carrying a coin engaging and removing in its preliminary traverse said pawl from normal positlon, substantially as described.

5. A coin-cofitrolled look including in combination a locking bolt, a rotatable knob shaft, a slide movable in response to shaft turning and after a preliminary traverse engaging and carrying with it inits further traverse said locking bolt, a locking pawl normally limiting the movement of said slide to its preliminary traverse, said slide being adapted to receive a coin and when carrying a coin engaging and removing in its preliminary traverse said pawl from normal position, and an abutment with a face inclined with respect to the direction 0f slide movement and adapted in the further traverse of said slide to engage a coin borne thereby.

In testimony whereof I have hereunto set my hand.

WILSON R. NEGKERMAN.

`Witnesses :v

PAUL N. CnrroHLow FRANCIS J. ToMAssoN. 

